John Podesta on Thursday told a group of 90 Democratic donors that he thinks Cruz is the most likely candidate to win the Republican nomination, followed by businessman Donald Trump and Sen. Marco Rubio (R-Fla.), according to Politico.

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Once dismissed as too conservative to win, Cruz has risen to the top tier of the Republican race. His campaign has raised the most money among Republicans with $26.5 million since its March 23 launch, and recently pulled ahead of Trump in the Iowa polling.